21013221385

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{1167077}}^1$

素因数の和:1167372

約数の個数: 16

約数和(自身を含む): 27253605456

約数和(自身を除く): 6240384071

約数列:

[1, 5, 13, 65, 277, 1385, 3601, 18005, 1167077, 5835385, 15172001, 75860005, 323280329, 1616401645, 4202644277, 21013221385]

約数ペア:

[(1, 21013221385), (5, 4202644277), (13, 1616401645), (65, 323280329), (277, 75860005), (1385, 15172001), (3601, 5835385), (18005, 1167077)]